Question

我在MVC中有15个复选框，我想在检查其中任何五个时填写下拉列表。在JavaScript的帮助下...请帮助我，我是编程的新手，所以我无法管理它。如果你可以帮助我至少javascript它是非常有帮助的。

 $(document).ready(function () {
    $("#timeslotee").prop("disabled", true);
    $("#Day").change(function () {
        if ($("#Country").val() != "Select") {
            var DocOptionss = {};
            DocOptionss.url = "/Sample/timeslot";
            DocOptionss.type = "POST";
            DocOptionss.data = JSON.stringify({ dayy: $("#Day").val(), docname: $("#State").val() });
            DocOptionss.datatype = "json";
            DocOptionss.contentType = "application/json";
            DocOptionss.success = function (StatesListd) {
                $("#timeslotee").empty();
                for (var i = 0; i < StatesListd.length; i++) {
                    $("#timeslotee").append("<option>" + StatesListd[i] + "</option>");
                }
                $("#timeslotee").prop("disabled", false);
            };
            DocOptionss.error = function () { alert("Error in Selecting A Day!!"); };
            $.ajax(DocOptionss);
        }
        else {
            $("#timeslotee").empty();
            $("#timeslotee").prop("disabled", true);
        }
    });
});
public JsonResult Days(string docname)
    {
        var dd = db.USERs.FirstOrDefault(s => s.Full_name == docname);
        List<string> StatesListw = new List<string>();


        if (dd.DOCTOR.DOCTOR_DAYS.Monday)
        {
            StatesListw.Add("Monday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Tuesday)
        {
            StatesListw.Add("Tuesday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Wednesday)
        {
            StatesListw.Add("Wednesday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Thursday)
        {
            StatesListw.Add("Thursday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Friday)
        {
            StatesListw.Add("Friday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Saturday)
        {
            StatesListw.Add("Saturday");
        }
        if (dd.DOCTOR.DOCTOR_DAYS.Sunday)
        {
            StatesListw.Add("Sunday");
        }
        return Json(StatesListw);
    }

Answer 1

您使用的是jQuery吗？如果是这样，这应该有效：

var $checkboxes = $('input:checkbox');

$checkboxes.change(function(){
    var numChecked = 0;
    $checkboxes.each(function(index, element){
        if(element.checked){
            numChecked++;
        }
    });
    if(numChecked >= 5){
        //do something
    }
});

如何选择多个复选框并使用javascript填充mvc中的下拉列表

1 个答案: